mike102de@yahoo.com wrote:
> > I would like to get your opinions on the following questions:
> > Do you think in the next couple of years,  the compactflash
standard
> is
> > likely to get more popular, or to become obsolete and being
replaced
> by
> > another standard? Do you know any opponents of CF standard, either
> current
> > or potential, can replace CF standard in the future?
>

CF will always be around for PDA/embedded systems, simply because it's
faster (16 bits) and easier to design with.

> It seems to me that the USB memory stick will be the prevalent memory

I have not seen any camera (USB master) with USB memory.

> device in the coming five or ten years. CF has too many pins, which
> makes it more expensive and more vulnerable. Also USB will fit
> anywhere, while CF will always need special add-ons. CF was good for
> digital cameras, but there it is now replaced by SD-Cards. I would'nt

Actually, newer camers are using xD (which is reincarnated SM) instead
of
SD.  SD is deadend without suports from camera makers.

> expect any substantial growth for CF.

The highest capacity memories are CFs (4G & 8G).  I think most
manufactures disagree with you.

> Do you think WinCE PDA and Palm OS PDA will adopt USB master in the near
> future?
>
> Thanks.
>


I think it is fair to assume that since most WinCE PDAs are using the Intel
PXA
series, you can figure out what is coming by looking at what is in the
latest PXA chip!

-- 
Best Regards,
Ulf Samuelsson   ulf@a-t-m-e-l.com
This is a personal view which may or may not be
share by my Employer Atmel Nordic AB

Wouldn't surprise me.

However, my crystal ball says you are more likely
to get bluetooth or wifi in the pda which could
communicate to an offboard USB master.

Of course, the offboard master will pboably cost
what your PDA did...

"Johnson Liuis" <gpsabove@yahoo.com> wrote in message
news:32tpf7F3ppa83U1@individual.net...
>
> Do you think WinCE PDA and Palm OS PDA will adopt USB master in the near
> future?
>
> Thanks.
>
> Johnson
>
>
> "Rufus V. Smith" <nospam@nospam.com> wrote in message
> news:1103641199.f8cf46941a16e996460db5cb46d66f79@teranews...
> > "Johnson Liuis" <gpsabove@yahoo.com> wrote in message
> > news:32gpjlF3kmespU1@individual.net...
> > > Hello, Mike,
> > >
> > > Could you please let me know why most of current PDAs do not support
USB
> > > port?
> > >
> > > Thanks.
> > >
> > > Johnson
> > >
> >
> > USB slaves are easy to make/program and require few
> > resources on the target.
> >
> > USB hosts (masters) are complex and resource hungry.
> >
> > (Read: expensive)
> >
> > Microsoft doesn't mind squandering your computers
> > resources on the host protocol, which is probably the
> > main reason it (USB) became so ubiquitous.
> >
> > Rufus
> >
> >
> >
> >
>
>

Do you think WinCE PDA and Palm OS PDA will adopt USB master in the near
future?

Thanks.

Johnson


"Rufus V. Smith" <nospam@nospam.com> wrote in message
news:1103641199.f8cf46941a16e996460db5cb46d66f79@teranews...
> "Johnson Liuis" <gpsabove@yahoo.com> wrote in message
> news:32gpjlF3kmespU1@individual.net...
> > Hello, Mike,
> >
> > Could you please let me know why most of current PDAs do not support USB
> > port?
> >
> > Thanks.
> >
> > Johnson
> >
>
> USB slaves are easy to make/program and require few
> resources on the target.
>
> USB hosts (masters) are complex and resource hungry.
>
> (Read: expensive)
>
> Microsoft doesn't mind squandering your computers
> resources on the host protocol, which is probably the
> main reason it (USB) became so ubiquitous.
>
> Rufus
>
>
>
>

"Johnson Liuis" <gpsabove@yahoo.com> wrote in message
news:32gpjlF3kmespU1@individual.net...
> Hello, Mike,
>
> Could you please let me know why most of current PDAs do not support USB
> port?
>
> Thanks.
>
> Johnson
>

USB slaves are easy to make/program and require few
resources on the target.

USB hosts (masters) are complex and resource hungry.

(Read: expensive)

Microsoft doesn't mind squandering your computers
resources on the host protocol, which is probably the
main reason it (USB) became so ubiquitous.

Rufus

Johnson Liuis wrote:
> Hello, Mike,
>
> Could you please let me know why most of current PDAs do not support
USB
> port?
>
Hello Johnson,

good question. It might be too early. I still use a Palm IIIx, even
without CF or SD card slot, but if I were looking for a new PDA, I
would certainly want one or two USB ports. It would allow to connect
keyboard and mouse, it would permit to copy images from a camera,
connect a printer and transfer data to a PC. Also intelligent
peripherals like a GPS receiver could be easily connected. Maybe it is
just wishful thinking, but I don't see any better alternative for PDAs.
Michael

steven wrote:
> 
> 
> Not entirely correct. USB-on-the-go (http://www.usb.org/developers/onthego/)
> provides a peer-to-peer connection between what otherwise would be slave
> devices.
> 
> 

	I wonder how many embedded devices use this technology ??

	Does anyone know what devices use which chips ?

hamilton

"hamilton" <hamilton@deminsional.com> wrote in message
news:41c3d909$1_1@omega.dimensional.com...
>
>
> Johnson Liuis wrote:
>
> > Could you please let me know why most of current PDAs do not support USB
> > port?
> >
> > Thanks.
> >
> > Johnson
> >
>
> Johnson,
>
> This is the type of question that is asked by someone who has never
> looked into what a USB anything is.
>
> So a simple answer:
>
> USB is a master / slave interface.
>
> The PC/MAC is a master and everything else is a slave.
> ( this includes disk drives and scanner/camera devices)
>
> So a PDA has to be a master.
>
> Until very recently, master chips for embedded application did not exist.
>

Not entirely correct. USB-on-the-go (http://www.usb.org/developers/onthego/)
provides a peer-to-peer connection between what otherwise would be slave
devices.

hamilton wrote:
> 
> 
> Johnson Liuis wrote:
> 
>> Could you please let me know why most of current PDAs do not support USB
>> port?
>>
>> Thanks.
>>
>> Johnson
>>
> 
> Johnson,
> 
>     This is the type of question that is asked by someone who has never 
> looked into what a USB anything is.
> 
>     So a simple answer:
> 
>     USB is a master / slave interface.
> 
>     The PC/MAC is a master and everything else is a slave.
>     ( this includes disk drives and scanner/camera devices)
> 
>     So a PDA has to be a master.
> 
>     Until very recently, master chips for embedded application did not 
> exist.
> 
> 
>     Now, go look up USB.
> 
> 
> hamilton

Posting a question on a newsgroup *is* looking it up.

--
Joe Legris

Johnson Liuis wrote:

> Could you please let me know why most of current PDAs do not support USB
> port?
> 
> Thanks.
> 
> Johnson
>

Johnson,

	This is the type of question that is asked by someone who has never 
looked into what a USB anything is.

	So a simple answer:

	USB is a master / slave interface.

	The PC/MAC is a master and everything else is a slave.
	( this includes disk drives and scanner/camera devices)

	So a PDA has to be a master.

	Until very recently, master chips for embedded application did not exist.


	Now, go look up USB.


hamilton